Solving 2 simultaneous equations. There are 4 variables. 2 of these variables are to be determined by Mathcad. The other 2 variabes are defined as (a,b). A large set of (a,b) is provided.

Hi! I am trying to solve 2 equations simultaneously.
There are 4 variables (x,y,a,b) in these 2 equations. 2 of these variables (x,y) are to be determined using Mathcad.

The other 2 variables (a and b) are given, However there is a large set of values of 'a' and 'b', around 1000!
If it was only 2 set i would have replaced the values of 'a' and 'b' each time, then take the solutions for (x,y).
However replacing 'a' and 'b' 1000 times doesn't seem a good idea!
I was wondering if there is a way in Mathcad to define 'a' and 'b' as arrays of values and then solve for x and y. So as to obtain the solution for all pairs of (a,b) at one go.
Thanks for helping!